bundles/org.eclipse.wst.jsdt.web.core/src/org/eclipse/wst/jsdt/web/core/internal/java/JsTranslation.java - sourceediting/webtools.sourceediting - Git at Google

 /*******************************************************************************
  * Copyright (c) 2004 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.wst.jsdt.web.core.internal.java;

 import java.util.ArrayList;
 import java.util.List;
 import java.util.Vector;

 import org.eclipse.core.filebuffers.FileBuffers;
 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IResourceChangeEvent;
 import org.eclipse.core.resources.IResourceChangeListener;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.NullProgressMonitor;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.core.runtime.Platform;
 import org.eclipse.core.runtime.jobs.Job;
 import org.eclipse.jface.text.IDocument;
 import org.eclipse.jface.text.Position;
 import org.eclipse.wst.jsdt.core.IBuffer;
 import org.eclipse.wst.jsdt.core.ICompilationUnit;
 import org.eclipse.wst.jsdt.core.IJavaElement;
 import org.eclipse.wst.jsdt.core.IJavaProject;
 import org.eclipse.wst.jsdt.core.IPackageDeclaration;
 import org.eclipse.wst.jsdt.core.ISourceRange;
 import org.eclipse.wst.jsdt.core.JavaModelException;
 import org.eclipse.wst.jsdt.core.LibrarySuperType;
 import org.eclipse.wst.jsdt.core.WorkingCopyOwner;
 import org.eclipse.wst.jsdt.internal.core.DocumentContextFragmentRoot;
 import org.eclipse.wst.jsdt.internal.core.SourceRefElement;
 import org.eclipse.wst.jsdt.web.core.internal.Logger;
 import org.eclipse.wst.jsdt.web.core.internal.project.JsWebNature;
 import org.eclipse.wst.sse.core.StructuredModelManager;
 import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel;
 import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument;
 import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel;
 import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode;

 /**
  * @author brad childs
  */
 public class JsTranslation implements IJsTranslation, IResourceChangeListener {
 	// for debugging
 	private static final boolean DEBUG;
 	static {
 		String value = Platform.getDebugOption("org.eclipse.wst.jsdt.web.core/debug/jsptranslation"); //$NON-NLS-1$
 		DEBUG = value != null && value.equalsIgnoreCase("true"); //$NON-NLS-1$
 	}

 	private ICompilationUnit fCompilationUnit = null;
 	private DocumentContextFragmentRoot fDocumentScope;


 	//private String fHtmlMangledPageName = ""; //$NON-NLS-1$
 	/** the name of the class (w/out extension) * */
 	//private String fHtmlPageName;
 	//private String fHtmlText = ""; //$NON-NLS-1$
 	private IJavaProject fJavaProject = null;
 	//private String fJsText = ""; //$NON-NLS-1$
 	/** lock to synchronize access to the compilation unit * */
 	private byte[] fLock = null;
 	private IProgressMonitor fProgressMonitor = null;
 	//private Position[] importRanges;
 	//private Position[] locationsInHtml;
 	//private IFile targetFile;
 	private IStructuredDocument fHtmlDocument;

 	private static final String SUPER_TYPE_NAME = "Window";
 	private static final String SUPER_TYPE_LIBRARY = "org.eclipse.wst.jsdt.launching.baseBrowserLibrary";

 	private JsTranslator translator;

 	private String mangledName;

 	public JsTranslation(IStructuredDocument htmlDocument, IJavaProject javaProj) {
 		fLock = new byte[0];
 		fJavaProject = javaProj;
 		fHtmlDocument = htmlDocument;


 		translator = new JsTranslator(getModel());
 		resetDocScope();
 		mangledName = createMangledName();
 		ResourcesPlugin.getWorkspace().addResourceChangeListener(this, IResourceChangeEvent.POST_CHANGE);
 //		if (xmlModel != null) {
 //
 //			IStructuredDocument doc = xmlModel.getStructuredDocument();
 //			//translator.translate();
 //			fHtmlMangledPageName = createClassname(xmlModel);
 //			fJsText = translator.getTranslation().toString();
 //			//fHtmlText = translator.getHtmlText();
 //			targetFile = getFile(xmlModel);
 //			fHtmlPageName = targetFile.getName();
 //
 //			fDocumentScope = new DocumentContextFragmentRoot(fJavaProject, targetFile, WebRootFinder.getWebContentFolder(javaProj.getProject()), WebRootFinder.getServerContextRoot(javaProj.getProject()), JsWebNature.VIRTUAL_SCOPE_ENTRY);
 //			importRanges = translator.getImportHtmlRanges();
 //			cuImports = translator.getRawImports();
 //			locationsInHtml = translator.getHtmlLocations();
 //			//fHtmlDocument = translator.getStructuredDocument();
 //		}
 //
 	}

 	private void resetDocScope() {
 		if(fDocumentScope==null) {
 			fDocumentScope = new DocumentContextFragmentRoot(fJavaProject, getFile(), WebRootFinder.getWebContentFolder(fJavaProject.getProject()), WebRootFinder.getServerContextRoot(fJavaProject.getProject()), JsWebNature.VIRTUAL_SCOPE_ENTRY);
 		}

 		fDocumentScope.setIncludedFiles(translator.getRawImports());
 	}

 	private IDOMModel getModel() {
 		IDOMModel xmlModel=null;
 		try {
 			xmlModel = (IDOMModel) StructuredModelManager.getModelManager().getExistingModelForRead(fHtmlDocument);
 			if(xmlModel==null) {
 				xmlModel = (IDOMModel) StructuredModelManager.getModelManager().getModelForRead(fHtmlDocument);
 			}
 		}finally {
 			if(xmlModel!=null) xmlModel.releaseFromRead();
 		}
 		return xmlModel;
 	}

 	public IFile getFile() {
 			return FileBuffers.getWorkspaceFileAtLocation(new Path(getModel().getBaseLocation()));
 	}


 	public IDocument getHtmlDocument() {
 		return fHtmlDocument;
 	}

 	/**
 	 * Originally from ReconcileStepForJava. Creates an ICompilationUnit from
 	 * the contents of the JSP document.
 	 *
 	 * @return an ICompilationUnit from the contents of the JSP document
 	 */
 	private ICompilationUnit createCompilationUnit() throws JavaModelException {
 		System.out.println("------------------------- CREATING CU ----------------------------");
 		LibrarySuperType superType = new LibrarySuperType(SUPER_TYPE_LIBRARY, fJavaProject, SUPER_TYPE_NAME);
 		ICompilationUnit cu = fDocumentScope.getDefaultPackageFragment().getCompilationUnit(getMangledName() + JsDataTypes.BASE_FILE_EXTENSION).getWorkingCopy(getWorkingCopyOwner(), getProblemRequestor(), getProgressMonitor());
 		//ICompilationUnit cu = fDocumentScope.getDefaultPackageFragment().getCompilationUnit(getMangledName() + JsDataTypes.BASE_FILE_EXTENSION,SUPER_TYPE_NAME).getWorkingCopy(getWorkingCopyOwner(), getProblemRequestor(), getProgressMonitor());

 		IBuffer buffer;
 		try {
 			buffer = cu.getBuffer();
 		} catch (JavaModelException e) {
 			e.printStackTrace();
 			buffer = null;
 		}
 		if (buffer != null) {
 			translator.setBuffer(buffer);
 		}
 		cu.makeConsistent(getProgressMonitor());
 		// cu.reconcile(ICompilationUnit.NO_AST, true, getWorkingCopyOwner(),
 		// getProgressMonitor());
 //		if (getHtmlPageName() == null || getMangledName() == null) {
 //			String cuName = cu.getPath().lastSegment();
 //			if (cuName != null) {
 //				//fHtmlMangledPageName = cuName.substring(0, cuName.lastIndexOf('.'));
 //				// set name of jsp file
 //				String unmangled = JsNameManglerUtil.unmangle(cuName);
 //				//fHtmlPageName = unmangled.substring(unmangled.lastIndexOf('/') + 1, unmangled.length());
 //			}
 //		}
 //		if (JsTranslation.DEBUG) {
 //			String cuText = cu.toString();
 //			System.out.println("+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++"); //$NON-NLS-1$
 //			System.out.println("(+) JSPTranslation [" + this + "] finished creating CompilationUnit: " + cu); //$NON-NLS-1$ //$NON-NLS-2$
 //			System.out.println("+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++"); //$NON-NLS-1$
 //			IPackageDeclaration[] ipd = cu.getPackageDeclarations();
 //			for (int i = 0; i < ipd.length; i++) {
 //				System.out.println("JSPTranslation.getCU() Package:" + ipd[i].getElementName());
 //			}
 //		}
 		return cu;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#fixupMangledName(java.lang.String)
 	 */
 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#fixupMangledName(java.lang.String)
 	 */
 	public String fixupMangledName(String displayString) {
 		if (displayString == null) {
 			return null;
 		}
 		return displayString.replaceAll(getMangledName() + ".js", getHtmlPageName());
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#getAllElementsInJsRange(int,
 	 *      int)
 	 */
 	public IJavaElement[] getAllElementsInJsRange(int javaPositionStart, int javaPositionEnd) {
 		IJavaElement[] EMTPY_RESULT_SET = new IJavaElement[0];
 		IJavaElement[] result = EMTPY_RESULT_SET;
 		IJavaElement[] allChildren = null;
 		try {
 			allChildren = getCompilationUnit().getChildren();
 		} catch (JavaModelException e) {
 		}
 		Vector validChildren = new Vector();
 		for (int i = 0; i < allChildren.length; i++) {
 			if (allChildren[i] instanceof IJavaElement && allChildren[i].getElementType() != IJavaElement.PACKAGE_DECLARATION) {
 				ISourceRange range = getJSSourceRangeOf(allChildren[i]);
 				if (javaPositionStart <= range.getOffset() && range.getLength() + range.getOffset() <= (javaPositionEnd)) {
 					validChildren.add(allChildren[i]);
 				} else if (allChildren[i].getElementType() == IJavaElement.TYPE) {
 					validChildren.add(allChildren[i]);
 				}
 			}
 		}
 		if (validChildren.size() > 0) {
 			result = (IJavaElement[]) validChildren.toArray(new IJavaElement[] {});
 		}
 		if (result == null || result.length == 0) {
 			return EMTPY_RESULT_SET;
 		}
 		return result;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#getCompilationUnit()
 	 */
 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#getCompilationUnit()
 	 */
 	public ICompilationUnit getCompilationUnit() {
 		synchronized (fLock) {
 			try {
 				if (fCompilationUnit == null) {
 					fCompilationUnit = createCompilationUnit();
 					return fCompilationUnit;
 				}
 				// reconcileCompilationUnit();

 			} catch (JavaModelException jme) {
 				if (JsTranslation.DEBUG) {
 					Logger.logException("error creating JSP working copy... ", jme); //$NON-NLS-1$
 				}
 			}

 		}
 		resetDocScope();
 		try {
 			fCompilationUnit = fCompilationUnit.getWorkingCopy(getWorkingCopyOwner(), getProblemRequestor(), getProgressMonitor());
 			fCompilationUnit.makeConsistent(getProgressMonitor());
 		} catch (JavaModelException ex) {
 			// TODO Auto-generated catch block
 			ex.printStackTrace();
 		}
 		return fCompilationUnit;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#getElementsFromJspRange(int,
 	 *      int)
 	 */
 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#getElementsFromJsRange(int,
 	 *      int)
 	 */
 	public IJavaElement[] getElementsFromJsRange(int javaPositionStart, int javaPositionEnd) {
 		IJavaElement[] EMTPY_RESULT_SET = new IJavaElement[0];
 		IJavaElement[] result = EMTPY_RESULT_SET;
 		try {
 			ICompilationUnit cu = getCompilationUnit();
 			// cu.makeConsistent(getProgressMonitor());
 			// cu.reconcile(ICompilationUnit.NO_AST, true,
 			// getWorkingCopyOwner(), getProgressMonitor());
 			if (cu != null) {
 				synchronized (fLock) {
 					int cuDocLength = cu.getBuffer().getLength();
 					int javaLength = javaPositionEnd - javaPositionStart;
 					if (cuDocLength > 0 && javaPositionStart >= 0 && javaLength >= 0 && javaPositionEnd <= cuDocLength) {
 						result = cu.codeSelect(javaPositionStart, javaLength, getWorkingCopyOwner());
 					}
 				}
 			}
 			if (result == null || result.length == 0) {
 				return EMTPY_RESULT_SET;
 			}
 		} catch (JavaModelException x) {
 			Logger.logException(x);
 		}
 		return result;
 	}

 	private String getHtmlPageName() {
 		IPath path = new Path(getModel().getBaseLocation());
 		return path.lastSegment();

 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#getJspText()
 	 */
 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#getHtmlText()
 	 */
 	public String getHtmlText() {
 		return fHtmlDocument.get();
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#isUseBean(int)
 	 */
 	// public boolean isUseBean(int javaOffset) {
 	// System.out.println("REMOVE JSPTranslation.isUseBean(int javaOffset)");
 	// return false;
 	// }
 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#getJavaPath()
 	 */
 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#getJavaPath()
 	 */
 	public String getJavaPath() {
 		// create if necessary
 		ICompilationUnit cu = getCompilationUnit();
 		return (cu != null) ? cu.getPath().toString() : ""; //$NON-NLS-1$
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#getJsElementAtOffset(int)
 	 */
 	public IJavaElement getJsElementAtOffset(int jsOffset) {
 		IJavaElement elements = null;
 		// Position[] positions = getJavaRanges(htmlOffset, length);
 		//
 		// ICompilationUnit cu = getCompilationUnit();
 		// synchronized (cu) {
 		try {
 			elements = getCompilationUnit().getElementAt(jsOffset);
 		} catch (JavaModelException e) {
 			// TODO Auto-generated catch block
 			if (JsTranslation.DEBUG) {
 				Logger.logException("error retrieving java elemtnt from compilation unit... ", e); //$NON-NLS-1$
 			}
 			// }
 		}
 		return elements;
 	}

 	private ISourceRange getJSSourceRangeOf(IJavaElement element) {
 		// returns the offset in html of given element
 		ISourceRange range = null;
 		if (element instanceof SourceRefElement) {
 			try {
 				range = ((SourceRefElement) element).getSourceRange();
 			} catch (JavaModelException e) {
 				// TODO Auto-generated catch block
 				e.printStackTrace();
 			}
 		}
 		return range;
 	}

 	public String getJsText() {
 		// return (fTranslator != null) ?
 		// fTranslator.getTranslation().toString(): ""; //$NON-NLS-1$
 		return translator.getJsText();
 	}

 	public String getMangledName() {
 		return this.mangledName;
 	}

 	private String createMangledName() {
 		String classname = ""; //$NON-NLS-1$

 		String base = getModel().getBaseLocation();
 		classname = JsNameManglerUtil.mangle(base);

 		return classname;
 	}

 	/**
 	 *
 	 * @return the problem requestor for the CompilationUnit in this
 	 *         JSPTranslation
 	 */
 	private JsProblemRequestor getProblemRequestor() {
 		return CompilationUnitHelper.getInstance().getProblemRequestor();
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#getProblems()
 	 */
 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#getProblems()
 	 */
 	public List getProblems() {
 		List problems = getProblemRequestor().getCollectedProblems();
 		return problems != null ? problems : new ArrayList();
 	}

 	/**
 	 *
 	 * @return the progress monitor used in long operations (reconcile, creating
 	 *         the CompilationUnit...) in this JSPTranslation
 	 */
 	private IProgressMonitor getProgressMonitor() {
 		if (fProgressMonitor == null) {
 			fProgressMonitor = new NullProgressMonitor();
 		}
 		return fProgressMonitor;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#getWorkingCopyOwner()
 	 */
 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#getWorkingCopyOwner()
 	 */
 	public WorkingCopyOwner getWorkingCopyOwner() {
 		return CompilationUnitHelper.getInstance().getWorkingCopyOwner();
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#ifOffsetInImportNode(int)
 	 */
 	public boolean ifOffsetInImportNode(int offset) {
 		Position[] importRanges = translator.getImportHtmlRanges();
 		for (int i = 0; i < importRanges.length; i++) {
 			if (importRanges[i].includes(offset)) {
 				return true;
 			}
 		}
 		return false;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#isOffsetInScriptNode(int)
 	 */
 //	public boolean isOffsetInScriptNode(int offset) {
 //		/* check import nodes */
 //		for (int i = 0; i < locationsInHtml.length; i++) {
 //			if (locationsInHtml[i].includes(offset)) {
 //				return true;
 //			}
 //		}
 //		return false;
 //	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#reconcileCompilationUnit()
 	 */
 	public void reconcileCompilationUnit() {
 		// if(true) return;
 		ICompilationUnit cu = getCompilationUnit();
 		if (fCompilationUnit == null) {
 			return;
 		}
 		if (cu != null) {
 			try {
 				synchronized (fLock) {
 					// if(false)
 					//cu.makeConsistent(getProgressMonitor());
 					cu.reconcile(ICompilationUnit.NO_AST, true, getWorkingCopyOwner(), getProgressMonitor());
 				}
 			} catch (JavaModelException e) {
 				Logger.logException(e);
 			}
 		}
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#release()
 	 */
 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#release()
 	 */
 	public void release() {
 		synchronized (fLock) {
 			if (fCompilationUnit != null) {
 				try {
 					if (JsTranslation.DEBUG) {
 						System.out.println("------------------------------------------------------------------"); //$NON-NLS-1$
 						System.out.println("(-) JSPTranslation [" + this + "] discarding CompilationUnit: " + fCompilationUnit); //$NON-NLS-1$ //$NON-NLS-2$
 						System.out.println("------------------------------------------------------------------"); //$NON-NLS-1$
 					}
 					fCompilationUnit.discardWorkingCopy();
 				} catch (JavaModelException e) {
 					// we're done w/ it anyway
 				}
 			}
 		}
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#setProblemCollectingActive(boolean)
 	 */
 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#setProblemCollectingActive(boolean)
 	 */
 	public void setProblemCollectingActive(boolean collect) {
 		ICompilationUnit cu = getCompilationUnit();
 		if (cu != null) {
 			getProblemRequestor().setIsActive(collect);
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.core.resources.IResourceChangeListener#resourceChanged(org.eclipse.core.resources.IResourceChangeEvent)
 	 */
 	public void resourceChanged(IResourceChangeEvent event) {
 		if(fDocumentScope!=null) {
 			fDocumentScope.setDirty(true);
 		}
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2004 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.wst.jsdt.web.core.internal.java;

	import java.util.ArrayList;
	import java.util.List;
	import java.util.Vector;

	import org.eclipse.core.filebuffers.FileBuffers;
	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.IResourceChangeEvent;
	import org.eclipse.core.resources.IResourceChangeListener;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.IProgressMonitor;
	import org.eclipse.core.runtime.NullProgressMonitor;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.core.runtime.Platform;
	import org.eclipse.core.runtime.jobs.Job;
	import org.eclipse.jface.text.IDocument;
	import org.eclipse.jface.text.Position;
	import org.eclipse.wst.jsdt.core.IBuffer;
	import org.eclipse.wst.jsdt.core.ICompilationUnit;
	import org.eclipse.wst.jsdt.core.IJavaElement;
	import org.eclipse.wst.jsdt.core.IJavaProject;
	import org.eclipse.wst.jsdt.core.IPackageDeclaration;
	import org.eclipse.wst.jsdt.core.ISourceRange;
	import org.eclipse.wst.jsdt.core.JavaModelException;
	import org.eclipse.wst.jsdt.core.LibrarySuperType;
	import org.eclipse.wst.jsdt.core.WorkingCopyOwner;
	import org.eclipse.wst.jsdt.internal.core.DocumentContextFragmentRoot;
	import org.eclipse.wst.jsdt.internal.core.SourceRefElement;
	import org.eclipse.wst.jsdt.web.core.internal.Logger;
	import org.eclipse.wst.jsdt.web.core.internal.project.JsWebNature;
	import org.eclipse.wst.sse.core.StructuredModelManager;
	import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel;
	import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument;
	import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel;
	import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode;

	/**
	* @author brad childs
	*/
	public class JsTranslation implements IJsTranslation, IResourceChangeListener {
	// for debugging
	private static final boolean DEBUG;
	static {
	String value = Platform.getDebugOption("org.eclipse.wst.jsdt.web.core/debug/jsptranslation"); //$NON-NLS-1$
	DEBUG = value != null && value.equalsIgnoreCase("true"); //$NON-NLS-1$
	}

	private ICompilationUnit fCompilationUnit = null;
	private DocumentContextFragmentRoot fDocumentScope;


	//private String fHtmlMangledPageName = ""; //$NON-NLS-1$
	/** the name of the class (w/out extension) * */
	//private String fHtmlPageName;
	//private String fHtmlText = ""; //$NON-NLS-1$
	private IJavaProject fJavaProject = null;
	//private String fJsText = ""; //$NON-NLS-1$
	/** lock to synchronize access to the compilation unit * */
	private byte[] fLock = null;
	private IProgressMonitor fProgressMonitor = null;
	//private Position[] importRanges;
	//private Position[] locationsInHtml;
	//private IFile targetFile;
	private IStructuredDocument fHtmlDocument;

	private static final String SUPER_TYPE_NAME = "Window";
	private static final String SUPER_TYPE_LIBRARY = "org.eclipse.wst.jsdt.launching.baseBrowserLibrary";

	private JsTranslator translator;

	private String mangledName;

	public JsTranslation(IStructuredDocument htmlDocument, IJavaProject javaProj) {
	fLock = new byte[0];
	fJavaProject = javaProj;
	fHtmlDocument = htmlDocument;


	translator = new JsTranslator(getModel());
	resetDocScope();
	mangledName = createMangledName();
	ResourcesPlugin.getWorkspace().addResourceChangeListener(this, IResourceChangeEvent.POST_CHANGE);
	// if (xmlModel != null) {
	//
	// IStructuredDocument doc = xmlModel.getStructuredDocument();
	// //translator.translate();
	// fHtmlMangledPageName = createClassname(xmlModel);
	// fJsText = translator.getTranslation().toString();
	// //fHtmlText = translator.getHtmlText();
	// targetFile = getFile(xmlModel);
	// fHtmlPageName = targetFile.getName();
	//
	// fDocumentScope = new DocumentContextFragmentRoot(fJavaProject, targetFile, WebRootFinder.getWebContentFolder(javaProj.getProject()), WebRootFinder.getServerContextRoot(javaProj.getProject()), JsWebNature.VIRTUAL_SCOPE_ENTRY);
	// importRanges = translator.getImportHtmlRanges();
	// cuImports = translator.getRawImports();
	// locationsInHtml = translator.getHtmlLocations();
	// //fHtmlDocument = translator.getStructuredDocument();
	// }
	//
	}

	private void resetDocScope() {
	if(fDocumentScope==null) {
	fDocumentScope = new DocumentContextFragmentRoot(fJavaProject, getFile(), WebRootFinder.getWebContentFolder(fJavaProject.getProject()), WebRootFinder.getServerContextRoot(fJavaProject.getProject()), JsWebNature.VIRTUAL_SCOPE_ENTRY);
	}

	fDocumentScope.setIncludedFiles(translator.getRawImports());
	}

	private IDOMModel getModel() {
	IDOMModel xmlModel=null;
	try {
	xmlModel = (IDOMModel) StructuredModelManager.getModelManager().getExistingModelForRead(fHtmlDocument);
	if(xmlModel==null) {
	xmlModel = (IDOMModel) StructuredModelManager.getModelManager().getModelForRead(fHtmlDocument);
	}
	}finally {
	if(xmlModel!=null) xmlModel.releaseFromRead();
	}
	return xmlModel;
	}

	public IFile getFile() {
	return FileBuffers.getWorkspaceFileAtLocation(new Path(getModel().getBaseLocation()));
	}


	public IDocument getHtmlDocument() {
	return fHtmlDocument;
	}

	/**
	* Originally from ReconcileStepForJava. Creates an ICompilationUnit from
	* the contents of the JSP document.
	*
	* @return an ICompilationUnit from the contents of the JSP document
	*/
	private ICompilationUnit createCompilationUnit() throws JavaModelException {
	System.out.println("------------------------- CREATING CU ----------------------------");
	LibrarySuperType superType = new LibrarySuperType(SUPER_TYPE_LIBRARY, fJavaProject, SUPER_TYPE_NAME);
	ICompilationUnit cu = fDocumentScope.getDefaultPackageFragment().getCompilationUnit(getMangledName() + JsDataTypes.BASE_FILE_EXTENSION).getWorkingCopy(getWorkingCopyOwner(), getProblemRequestor(), getProgressMonitor());
	//ICompilationUnit cu = fDocumentScope.getDefaultPackageFragment().getCompilationUnit(getMangledName() + JsDataTypes.BASE_FILE_EXTENSION,SUPER_TYPE_NAME).getWorkingCopy(getWorkingCopyOwner(), getProblemRequestor(), getProgressMonitor());

	IBuffer buffer;
	try {
	buffer = cu.getBuffer();
	} catch (JavaModelException e) {
	e.printStackTrace();
	buffer = null;
	}
	if (buffer != null) {
	translator.setBuffer(buffer);
	}
	cu.makeConsistent(getProgressMonitor());
	// cu.reconcile(ICompilationUnit.NO_AST, true, getWorkingCopyOwner(),
	// getProgressMonitor());
	// if (getHtmlPageName() == null \|\| getMangledName() == null) {
	// String cuName = cu.getPath().lastSegment();
	// if (cuName != null) {
	// //fHtmlMangledPageName = cuName.substring(0, cuName.lastIndexOf('.'));
	// // set name of jsp file
	// String unmangled = JsNameManglerUtil.unmangle(cuName);
	// //fHtmlPageName = unmangled.substring(unmangled.lastIndexOf('/') + 1, unmangled.length());
	// }
	// }
	// if (JsTranslation.DEBUG) {
	// String cuText = cu.toString();
	// System.out.println("+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++"); //$NON-NLS-1$
	// System.out.println("(+) JSPTranslation [" + this + "] finished creating CompilationUnit: " + cu); //$NON-NLS-1$ //$NON-NLS-2$
	// System.out.println("+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++"); //$NON-NLS-1$
	// IPackageDeclaration[] ipd = cu.getPackageDeclarations();
	// for (int i = 0; i < ipd.length; i++) {
	// System.out.println("JSPTranslation.getCU() Package:" + ipd[i].getElementName());
	// }
	// }
	return cu;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#fixupMangledName(java.lang.String)
	*/
	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#fixupMangledName(java.lang.String)
	*/
	public String fixupMangledName(String displayString) {
	if (displayString == null) {
	return null;
	}
	return displayString.replaceAll(getMangledName() + ".js", getHtmlPageName());
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#getAllElementsInJsRange(int,
	* int)
	*/
	public IJavaElement[] getAllElementsInJsRange(int javaPositionStart, int javaPositionEnd) {
	IJavaElement[] EMTPY_RESULT_SET = new IJavaElement[0];
	IJavaElement[] result = EMTPY_RESULT_SET;
	IJavaElement[] allChildren = null;
	try {
	allChildren = getCompilationUnit().getChildren();
	} catch (JavaModelException e) {
	}
	Vector validChildren = new Vector();
	for (int i = 0; i < allChildren.length; i++) {
	if (allChildren[i] instanceof IJavaElement && allChildren[i].getElementType() != IJavaElement.PACKAGE_DECLARATION) {
	ISourceRange range = getJSSourceRangeOf(allChildren[i]);
	if (javaPositionStart <= range.getOffset() && range.getLength() + range.getOffset() <= (javaPositionEnd)) {
	validChildren.add(allChildren[i]);
	} else if (allChildren[i].getElementType() == IJavaElement.TYPE) {
	validChildren.add(allChildren[i]);
	}
	}
	}
	if (validChildren.size() > 0) {
	result = (IJavaElement[]) validChildren.toArray(new IJavaElement[] {});
	}
	if (result == null \|\| result.length == 0) {
	return EMTPY_RESULT_SET;
	}
	return result;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#getCompilationUnit()
	*/
	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#getCompilationUnit()
	*/
	public ICompilationUnit getCompilationUnit() {
	synchronized (fLock) {
	try {
	if (fCompilationUnit == null) {
	fCompilationUnit = createCompilationUnit();
	return fCompilationUnit;
	}
	// reconcileCompilationUnit();

	} catch (JavaModelException jme) {
	if (JsTranslation.DEBUG) {
	Logger.logException("error creating JSP working copy... ", jme); //$NON-NLS-1$
	}
	}

	}
	resetDocScope();
	try {
	fCompilationUnit = fCompilationUnit.getWorkingCopy(getWorkingCopyOwner(), getProblemRequestor(), getProgressMonitor());
	fCompilationUnit.makeConsistent(getProgressMonitor());
	} catch (JavaModelException ex) {
	// TODO Auto-generated catch block
	ex.printStackTrace();
	}
	return fCompilationUnit;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#getElementsFromJspRange(int,
	* int)
	*/
	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#getElementsFromJsRange(int,
	* int)
	*/
	public IJavaElement[] getElementsFromJsRange(int javaPositionStart, int javaPositionEnd) {
	IJavaElement[] EMTPY_RESULT_SET = new IJavaElement[0];
	IJavaElement[] result = EMTPY_RESULT_SET;
	try {
	ICompilationUnit cu = getCompilationUnit();
	// cu.makeConsistent(getProgressMonitor());
	// cu.reconcile(ICompilationUnit.NO_AST, true,
	// getWorkingCopyOwner(), getProgressMonitor());
	if (cu != null) {
	synchronized (fLock) {
	int cuDocLength = cu.getBuffer().getLength();
	int javaLength = javaPositionEnd - javaPositionStart;
	if (cuDocLength > 0 && javaPositionStart >= 0 && javaLength >= 0 && javaPositionEnd <= cuDocLength) {
	result = cu.codeSelect(javaPositionStart, javaLength, getWorkingCopyOwner());
	}
	}
	}
	if (result == null \|\| result.length == 0) {
	return EMTPY_RESULT_SET;
	}
	} catch (JavaModelException x) {
	Logger.logException(x);
	}
	return result;
	}

	private String getHtmlPageName() {
	IPath path = new Path(getModel().getBaseLocation());
	return path.lastSegment();

	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#getJspText()
	*/
	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#getHtmlText()
	*/
	public String getHtmlText() {
	return fHtmlDocument.get();
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#isUseBean(int)
	*/
	// public boolean isUseBean(int javaOffset) {
	// System.out.println("REMOVE JSPTranslation.isUseBean(int javaOffset)");
	// return false;
	// }
	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#getJavaPath()
	*/
	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#getJavaPath()
	*/
	public String getJavaPath() {
	// create if necessary
	ICompilationUnit cu = getCompilationUnit();
	return (cu != null) ? cu.getPath().toString() : ""; //$NON-NLS-1$
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#getJsElementAtOffset(int)
	*/
	public IJavaElement getJsElementAtOffset(int jsOffset) {
	IJavaElement elements = null;
	// Position[] positions = getJavaRanges(htmlOffset, length);
	//
	// ICompilationUnit cu = getCompilationUnit();
	// synchronized (cu) {
	try {
	elements = getCompilationUnit().getElementAt(jsOffset);
	} catch (JavaModelException e) {
	// TODO Auto-generated catch block
	if (JsTranslation.DEBUG) {
	Logger.logException("error retrieving java elemtnt from compilation unit... ", e); //$NON-NLS-1$
	}
	// }
	}
	return elements;
	}

	private ISourceRange getJSSourceRangeOf(IJavaElement element) {
	// returns the offset in html of given element
	ISourceRange range = null;
	if (element instanceof SourceRefElement) {
	try {
	range = ((SourceRefElement) element).getSourceRange();
	} catch (JavaModelException e) {
	// TODO Auto-generated catch block
	e.printStackTrace();
	}
	}
	return range;
	}

	public String getJsText() {
	// return (fTranslator != null) ?
	// fTranslator.getTranslation().toString(): ""; //$NON-NLS-1$
	return translator.getJsText();
	}

	public String getMangledName() {
	return this.mangledName;
	}

	private String createMangledName() {
	String classname = ""; //$NON-NLS-1$

	String base = getModel().getBaseLocation();
	classname = JsNameManglerUtil.mangle(base);

	return classname;
	}

	/**
	*
	* @return the problem requestor for the CompilationUnit in this
	* JSPTranslation
	*/
	private JsProblemRequestor getProblemRequestor() {
	return CompilationUnitHelper.getInstance().getProblemRequestor();
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#getProblems()
	*/
	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#getProblems()
	*/
	public List getProblems() {
	List problems = getProblemRequestor().getCollectedProblems();
	return problems != null ? problems : new ArrayList();
	}

	/**
	*
	* @return the progress monitor used in long operations (reconcile, creating
	* the CompilationUnit...) in this JSPTranslation
	*/
	private IProgressMonitor getProgressMonitor() {
	if (fProgressMonitor == null) {
	fProgressMonitor = new NullProgressMonitor();
	}
	return fProgressMonitor;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#getWorkingCopyOwner()
	*/
	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#getWorkingCopyOwner()
	*/
	public WorkingCopyOwner getWorkingCopyOwner() {
	return CompilationUnitHelper.getInstance().getWorkingCopyOwner();
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#ifOffsetInImportNode(int)
	*/
	public boolean ifOffsetInImportNode(int offset) {
	Position[] importRanges = translator.getImportHtmlRanges();
	for (int i = 0; i < importRanges.length; i++) {
	if (importRanges[i].includes(offset)) {
	return true;
	}
	}
	return false;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#isOffsetInScriptNode(int)
	*/
	// public boolean isOffsetInScriptNode(int offset) {
	// /* check import nodes */
	// for (int i = 0; i < locationsInHtml.length; i++) {
	// if (locationsInHtml[i].includes(offset)) {
	// return true;
	// }
	// }
	// return false;
	// }

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#reconcileCompilationUnit()
	*/
	public void reconcileCompilationUnit() {
	// if(true) return;
	ICompilationUnit cu = getCompilationUnit();
	if (fCompilationUnit == null) {
	return;
	}
	if (cu != null) {
	try {
	synchronized (fLock) {
	// if(false)
	//cu.makeConsistent(getProgressMonitor());
	cu.reconcile(ICompilationUnit.NO_AST, true, getWorkingCopyOwner(), getProgressMonitor());
	}
	} catch (JavaModelException e) {
	Logger.logException(e);
	}
	}
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#release()
	*/
	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#release()
	*/
	public void release() {
	synchronized (fLock) {
	if (fCompilationUnit != null) {
	try {
	if (JsTranslation.DEBUG) {
	System.out.println("------------------------------------------------------------------"); //$NON-NLS-1$
	System.out.println("(-) JSPTranslation [" + this + "] discarding CompilationUnit: " + fCompilationUnit); //$NON-NLS-1$ //$NON-NLS-2$
	System.out.println("------------------------------------------------------------------"); //$NON-NLS-1$
	}
	fCompilationUnit.discardWorkingCopy();
	} catch (JavaModelException e) {
	// we're done w/ it anyway
	}
	}
	}
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.JSPTranslation_Interface#setProblemCollectingActive(boolean)
	*/
	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.jsdt.web.core.internal.java.IJSPTranslation#setProblemCollectingActive(boolean)
	*/
	public void setProblemCollectingActive(boolean collect) {
	ICompilationUnit cu = getCompilationUnit();
	if (cu != null) {
	getProblemRequestor().setIsActive(collect);
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.core.resources.IResourceChangeListener#resourceChanged(org.eclipse.core.resources.IResourceChangeEvent)
	*/
	public void resourceChanged(IResourceChangeEvent event) {
	if(fDocumentScope!=null) {
	fDocumentScope.setDirty(true);
	}
	}
	}